I would guess that West Virginia and Pennsylvania might be bad states unless you plan your route well. They are mountainous and the traffic is probably funnelled into the valleys. The population density is relatively high.
As a PA resident I guess I have to defend my state's honor.
Actually western PA is a very good bicycling area as there are a lot of rural, low-traffic roads and scenic roads. I'm 20 minutes from downtown Pittsburgh by car but 30 minutes from my house on a bike and I ride by farms with cows and horses. The best of all worlds.
I'm a bit familiar with WV too and there are wonderful biking areas there too.
Both states share one trait; they are not easy riding. There are hills, hills and more hills. Bring low gears and a willingness to work and you can have a lot of good riding time here.
This message was edited by DaveB on 1-9-07 @ 7:14 AM